Personal digital assistant



FIG. 1 is a perspective view of a personal digital assistant showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and

FIG. 8 is a perspective view thereof wherein the antenna module is raised in horizontal use; and,

FIG. 9 is a perspective view thereof wherein the antenna module is raised in vertical use. 

The ornamental design for a “personal digital assistant,” as shown and described. 